Motorola 009 ユーザーズマニュアル

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Additional Health and Safety Information

175

Researchers conducted a large battery of laboratory tests to assess 

the effects of exposure to mobile phone RF on genetic material. These 

included tests for several kinds of abnormalities, including mutations, 

chromosomal aberrations, DNA strand breaks, and structural 

changes in the genetic material of blood cells called lymphocytes. 

None of the tests showed any effect of the RF except for the 

micronucleus assay, which detects structural effects on the genetic 

material. The cells in this assay showed changes after exposure to 

simulated cell phone radiation, but only after 24 hours of exposure. It 

is possible that exposing the test cells to radiation for this long resulted 

in heating. Since this assay is known to be sensitive to heating, heat 

alone could have caused the abnormalities to occur. The data already 

in the literature on the response of the micronucleus assay to RF are 

conflicting. Thus, follow-up research is necessary.(2) 

FDA is currently working with government, industry, and academic 

groups to ensure the proper follow-up to these industry-funded 

research findings. Collaboration with the Cellular 

Telecommunications Industry Association (CTIA) in particular is 

expected to lead to FDA providing research recommendations and 

scientific oversight of new CTIA-funded research based on such 

recommendations. 

Two other studies of interest have been reported recently in the 

literature: 

Two groups of 18 people were exposed to simulated mobile phone 

signals under laboratory conditions while they performed cognitive 

function tests. There were no changes in the subjects' ability to recall 

words, numbers, or pictures, or in their spatial memory, but they were 

able to make choices more quickly in one visual test when they were 

exposed to simulated mobile phone signals. This was the only change 

noted among more than 20 variables compared.(3) 

In a study of 209 brain tumor cases and 425 matched controls, there 

was no increased risk of brain tumors associated with mobile phone 

use. When tumors did exist in certain locations, however, they were 

more likely to be on the side of the head where the mobile phone was 

used. Because this occurred in only a small number of cases, the 

increased likelihood was too small to be statistically significant.(4) 

In summary, we do not have enough information at this point to assure 

the public that there are, or are not, any low incident health problems 

associated with use of mobile phones. FDA continues to work with all 

parties, including other federal agencies and industry, to assure that 

research is undertaken to provide the necessary answers to the 

outstanding questions about the safety of mobile phones. 

Accompli 009 User's Guide_.book  Page 175  Wednesday, June 26, 2002  2:56 PM